[INFO] updating cached repository https://github.com/jalc96/the_witness_cli_black_white_puzzle
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0a9669cedc26040245c88b823c99a73c30d70968
[INFO] testing jalc96/the_witness_cli_black_white_puzzle against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjalc96%2Fthe_witness_cli_black_white_puzzle" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jalc96/the_witness_cli_black_white_puzzle on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jalc96/the_witness_cli_black_white_puzzle
[INFO] finished tweaking git repo https://github.com/jalc96/the_witness_cli_black_white_puzzle
[INFO] tweaked toml for git repo https://github.com/jalc96/the_witness_cli_black_white_puzzle written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/jalc96/the_witness_cli_black_white_puzzle already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0e259b420975a35805403ba75660b21bbfb89d00f5da8a5c8ff829cbc4ac7fbe
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0e259b420975a35805403ba75660b21bbfb89d00f5da8a5c8ff829cbc4ac7fbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e259b420975a35805403ba75660b21bbfb89d00f5da8a5c8ff829cbc4ac7fbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e259b420975a35805403ba75660b21bbfb89d00f5da8a5c8ff829cbc4ac7fbe", kill_on_drop: false }`
[INFO] [stdout] 0e259b420975a35805403ba75660b21bbfb89d00f5da8a5c8ff829cbc4ac7fbe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f5c4325b7ab7c5d400f780169b5722409ad4647531d759459bb374a404d30320
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f5c4325b7ab7c5d400f780169b5722409ad4647531d759459bb374a404d30320", kill_on_drop: false }`
[INFO] [stderr]    Compiling console_the_witness v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::clone`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::clone;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::PartialEq`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::cmp::PartialEq;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Position_2d` should have an upper camel case name
[INFO] [stdout]   --> src/main.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct Position_2d {
[INFO] [stdout]    |        ^^^^^^^^^^^ help: convert the identifier to upper camel case: `Position2d`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/main.rs:321:9
[INFO] [stdout]     |
[INFO] [stdout] 321 |         /// Reads a command from std io and trims it so it doesnt have \n symbol or kind of like that
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 322 |         let mut input = String::from("");
[INFO] [stdout]     |         --------------------------------- rustdoc does not generate documentation for statements
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `checked_positions`
[INFO] [stdout]    --> src/main.rs:191:13
[INFO] [stdout]     |
[INFO] [stdout] 191 |         let mut checked_positions: Vec<Position_2d> = Vec::new();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_checked_positions`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:191:13
[INFO] [stdout]     |
[INFO] [stdout] 191 |         let mut checked_positions: Vec<Position_2d> = Vec::new();
[INFO] [stdout]     |             ----^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:551:21
[INFO] [stdout]     |
[INFO] [stdout] 551 |                 let mut current_position = board.player_current_position.borrow_mut();
[INFO] [stdout]     |                     ----^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rollback_to_original`
[INFO] [stdout]   --> src/main.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn rollback_to_original(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `equals`
[INFO] [stdout]   --> src/main.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 |     fn equals(&self, other: Position_2d) -> bool {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `show_command`
[INFO] [stdout]    --> src/main.rs:329:8
[INFO] [stdout]     |
[INFO] [stdout] 329 |     fn show_command(self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.17s
[INFO] running `Command { std: "docker" "inspect" "f5c4325b7ab7c5d400f780169b5722409ad4647531d759459bb374a404d30320", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5c4325b7ab7c5d400f780169b5722409ad4647531d759459bb374a404d30320", kill_on_drop: false }`
[INFO] [stdout] f5c4325b7ab7c5d400f780169b5722409ad4647531d759459bb374a404d30320
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4a3ac60cd119f93f8eaa5caf1a3be2d2704a1737580c6e35837ee0ac421d51e2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4a3ac60cd119f93f8eaa5caf1a3be2d2704a1737580c6e35837ee0ac421d51e2", kill_on_drop: false }`
[INFO] [stderr]    Compiling console_the_witness v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::clone`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::clone;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::PartialEq`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::cmp::PartialEq;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Position_2d` should have an upper camel case name
[INFO] [stdout]   --> src/main.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct Position_2d {
[INFO] [stdout]    |        ^^^^^^^^^^^ help: convert the identifier to upper camel case: `Position2d`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/main.rs:321:9
[INFO] [stdout]     |
[INFO] [stdout] 321 |         /// Reads a command from std io and trims it so it doesnt have \n symbol or kind of like that
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 322 |         let mut input = String::from("");
[INFO] [stdout]     |         --------------------------------- rustdoc does not generate documentation for statements
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `checked_positions`
[INFO] [stdout]    --> src/main.rs:191:13
[INFO] [stdout]     |
[INFO] [stdout] 191 |         let mut checked_positions: Vec<Position_2d> = Vec::new();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_checked_positions`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:191:13
[INFO] [stdout]     |
[INFO] [stdout] 191 |         let mut checked_positions: Vec<Position_2d> = Vec::new();
[INFO] [stdout]     |             ----^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:551:21
[INFO] [stdout]     |
[INFO] [stdout] 551 |                 let mut current_position = board.player_current_position.borrow_mut();
[INFO] [stdout]     |                     ----^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rollback_to_original`
[INFO] [stdout]   --> src/main.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn rollback_to_original(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `equals`
[INFO] [stdout]   --> src/main.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 |     fn equals(&self, other: Position_2d) -> bool {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `show_command`
[INFO] [stdout]    --> src/main.rs:329:8
[INFO] [stdout]     |
[INFO] [stdout] 329 |     fn show_command(self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `Command { std: "docker" "inspect" "4a3ac60cd119f93f8eaa5caf1a3be2d2704a1737580c6e35837ee0ac421d51e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a3ac60cd119f93f8eaa5caf1a3be2d2704a1737580c6e35837ee0ac421d51e2", kill_on_drop: false }`
[INFO] [stdout] 4a3ac60cd119f93f8eaa5caf1a3be2d2704a1737580c6e35837ee0ac421d51e2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c7200ed856e05e7e4f44d1a23d3175c10eb9c5e68b40904af9d7c86ca83c4a7b
[INFO] running `Command { std: "docker" "start" "-a" "c7200ed856e05e7e4f44d1a23d3175c10eb9c5e68b40904af9d7c86ca83c4a7b", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::clone`
[INFO] [stderr]  --> src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::clone;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp::PartialEq`
[INFO] [stderr]  --> src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::cmp::PartialEq;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type `Position_2d` should have an upper camel case name
[INFO] [stderr]   --> src/main.rs:43:8
[INFO] [stderr]    |
[INFO] [stderr] 43 | struct Position_2d {
[INFO] [stderr]    |        ^^^^^^^^^^^ help: convert the identifier to upper camel case: `Position2d`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/main.rs:321:9
[INFO] [stderr]     |
[INFO] [stderr] 321 |         /// Reads a command from std io and trims it so it doesnt have \n symbol or kind of like that
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 322 |         let mut input = String::from("");
[INFO] [stderr]     |         --------------------------------- rustdoc does not generate documentation for statements
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `checked_positions`
[INFO] [stderr]    --> src/main.rs:191:13
[INFO] [stderr]     |
[INFO] [stderr] 191 |         let mut checked_positions: Vec<Position_2d> = Vec::new();
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_checked_positions`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:191:13
[INFO] [stderr]     |
[INFO] [stderr] 191 |         let mut checked_positions: Vec<Position_2d> = Vec::new();
[INFO] [stderr]     |             ----^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:551:21
[INFO] [stderr]     |
[INFO] [stderr] 551 |                 let mut current_position = board.player_current_position.borrow_mut();
[INFO] [stderr]     |                     ----^^^^^^^^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `rollback_to_original`
[INFO] [stderr]   --> src/main.rs:37:8
[INFO] [stderr]    |
[INFO] [stderr] 37 |     fn rollback_to_original(&mut self) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `equals`
[INFO] [stderr]   --> src/main.rs:53:8
[INFO] [stderr]    |
[INFO] [stderr] 53 |     fn equals(&self, other: Position_2d) -> bool {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `show_command`
[INFO] [stderr]    --> src/main.rs:329:8
[INFO] [stderr]     |
[INFO] [stderr] 329 |     fn show_command(self) {
[INFO] [stderr]     |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/console_the_witness-fc3a7819fa072288
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c7200ed856e05e7e4f44d1a23d3175c10eb9c5e68b40904af9d7c86ca83c4a7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7200ed856e05e7e4f44d1a23d3175c10eb9c5e68b40904af9d7c86ca83c4a7b", kill_on_drop: false }`
[INFO] [stdout] c7200ed856e05e7e4f44d1a23d3175c10eb9c5e68b40904af9d7c86ca83c4a7b